There are various programming options that allow the Ador1 to delay opening. You can use programming option 3 which makes the door open later and close earlier. It may not achieve what you want as far as opening, and it might close too early depending on your chickens' habits.
But there is also programming option 11 with sub-options. If you set option 11 with sub-option 1 the door will open 1/2 hour later. Sub-option 2 gives 1 hour. Sub-option 3 gives 1.5 hours. And so on up to 6. These times are approximate. Programming option 10 cancels out option 11.
But if you absolutely need a convenient timer, then the pulletshut has to be considered.
Personally, I found the Ador1 better in every respect for my situation except for the timer availability. I didn't want to compromise, so I crafted my own timer. The Ador1 has electronic pins available that you can attach to signal the door to open and close, so I used those and I can get the door to open at the exact minute that I want. Not exactly retail consumer friendly, but I find it pretty cool that I can have a different and precise open and close time for each and every day of the year. That is, if you can build the custom electronics to drive it.